Update charted to 0.4.8 and roll

packages/quiver/test/collection/collection_test.dart

 // Copyright 2013 Google Inc. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 51 matching lines @@
     });
 
     test('return false for non-equal sets', () {
       expect(setsEqual(null, new Set()), isFalse);
       expect(setsEqual(new Set(), null), isFalse);
       expect(setsEqual(new Set.from([1]), new Set.from([2])), isFalse);
       expect(setsEqual(new Set.from([1]), new Set()), isFalse);
       expect(setsEqual(new Set(), new Set.from([1])), isFalse);
     });
   });
+
+  group('indexOf', () {
+    test('returns the first matching index', () {
+      expect(indexOf<int>([1, 12, 19, 20, 24], (n) => n % 2 == 0), 1);
+      expect(indexOf<String>(['a', 'b', 'a'], (s) => s == 'a'), 0);
+    });
+
+    test('returns -1 when there is no match', () {
+      expect(indexOf<int>([1, 3, 7], (n) => n % 2 == 0), -1);
+      expect(indexOf<String>(['a', 'b'], (s) => s == 'e'), -1);
+      expect(indexOf<bool>([], (_) => true), -1);
+    });
+  });
 }